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(5) When the D LINK LED turns off
(6) When the D LINK LED flashes
(7) When the L ER LED turns on
Check item Action
Does the own station in network operate normally?
Connect the engineering tool to the master station, and then check if a data link is
established in the own station by using CC-Link IE Field Network diagnostics. (
User's manual for the master/local module used)
Are 1000BASE-T-compliant Ethernet cables used?
Replace the cable with a 1000BASE-T-compliant Ethernet cable. ( User's manual
for the master/local module used)
Is the station-to-station distance 100m or less? Change the station-to-station distance to 100m or less.
Does the cabling condition (bend radius) meet the specifications? Refer to the manual for the Ethernet cable used, and correct the bend radius.
Is any Ethernet cable disconnected? Replace the Ethernet cable.
Do other stations connected to the main A/D converter module
operate normally?
Check if the power supplies of the other stations are turned on.
Does the switching hub used in the system operate normally?
• Check if a 1000BASE-T-compliant switching hub is used. ( User's manual for the
master/local module used)
• Check if the power supply of the switching hub is turned on.
Does the station number of the main A/D converter module overlap
with the other stations?
Two or more stations are overlapping.
Change the setting so that all the station numbers differ.
Check item Action
Does the set station number of the main A/D converter module match
the station number of the main A/D converter module that is set up in
the network configuration settings of the master station or in the CC
IE Field configuration?
Match the station number of the main A/D converter module with the station number
that is set up in the network configuration settings of the master station or in the CC IE
Field configuration.
Is the station type remote device station?
In the network configuration settings of the master station, change the station type to
the remote device station.
Is the A/D converter module a reserved station?
Change the setting of reserved/ignored error station to other than the reserved station
in the network configuration settings of the master station.
Is stop of the data link checked through CC-Link IE Field Network
diagnostics?
Check the link status through CC-Link IE Field Network diagnostics and start the link
when the data link is stopped.
Is the station number setting switch set to other than 1 to 120?
The setting range for the station number setting switch is 1 to 120. Set the number
between 1 and 120.
Has the connection been changed to the other master station with a
different network number?
• Correct the connection to the previous master station.
• To communicate with the master station with a different network number, power off
and on the main A/D converter module.
Check item Action
Are Ethernet cables normal?
• Check if 1000BASE-T-compliant Ethernet cables are used. ( User's manual for
the master/local module used)
• Check if the station-to-station distance is 100m or less.
• Check if the Ethernet cables are not disconnected.
Does the switching hub in the system normally operate?
• Check if a 1000BASE-T-compliant switching hub is used. ( User's manual for the
master/local module used)
• Check if the power supply of the switching hub is turned on.
Do other stations connected to the main A/D converter module
operate normally?
Check if the power supplies of the other stations are turned on.
Is the mode of the master station set to other than Online? Change the mode of the master station to Online.
Is there any noise affecting the system? Check the wiring condition of the Ethernet cables.
Is the loopback function enabled for the master station?
When the loopback function is enabled, check if the ring topology is correctly
configured for the port where the L ER LED is on. ( User's manual for the
master/local module used)
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